Nuke Performance - Full Flow Flex Fuel Sensor AdapterNuke Performance Full Flow Flex Fuel Sensor Adapter. Bypass design lets you use an ethanol content sensor without flow loss. With the Nuke Performance bypass Full Flow Flex Fuel Sensor Adapter, you can mount your ethanol content sensor on both the pressure and return fuel line in your fuel system. A sensor is not included with delivery. Fits most common GM flex fuel sensors Bypass design exceeds AN 10 fuel line capacity AN 10 ORB inlet outlet for